Reasons why the Qur'an was sent down in Stages

The Qur'an was revealed in stages over a period of 23 years, and not as a complete book in one single act of revelation. There are a number of reasons for this; most important are the following:

• To strengthen the heart of the Prophet by addressing him continuously and whenever the need for guidance arose.
• Out of consideration for the Prophet since revelation was a very difficult experience for him.
• To gradually implement the laws of God.
• To make understanding, application and memorisation of the revelation easier for the believers.